A Liver Concentrate as a Source of Unrecognized Vitamins Required by the Chick
- 1 July 1942
- journal article
- research article
- Published by Elsevier in Journal of Nutrition
- Vol. 24 (1) , 65-72
- https://doi.org/10.1093/jn/24.1.65
Abstract
When chicks receive a ration that contains no vitamins except those now recognized as such, they grow slowly and develop perosis. A water extract of beef liver contains all unrecognized vitamins required by the chick. The unrecognized vitamins required by chicks are adsorbed from a water extract of liver by fuller's earth at a pH of 1.0. The activity is readily eluted by 0.2 N ammonia. During the adsorption procedure approximately one-third of the total activity is lost. A simplified diet has been prepared that is adequate for the growth of chicks and does not contain over 1% of crude vitamin carriers.Keywords
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